Mannatech Spokesperson Nancy Lieberman Plays on Winning Team in NBA
All-Star Celebrity Game

Team MannatechSM Athlete Achieves Optimal
Health and Fitness Through the Use of Mannatech Products

February 17, 2009 10:35 AM Eastern Standard Time

COPPELL, Texas--(BUSINESS WIRE)--Mannatech, Incorporated (NASDAQ: MTEX), a leading developer and provider
of proprietary dietary supplements, weight management products and skin
care solutions, today announced that Team
MannatechSM member and basketball legend Nancy
Lieberman played in the McDonald’s NBA All-Star Celebrity Game
Friday, Feb. 13, on the winning East team.

Lieberman made a surprise entrance into the game during the second
quarter and went on to help the East team win the game 60-57.

“I am honored to have participated in this wonderful event and am
excited ESPN and the NBA invited me to play,” said Lieberman. “To make
sure I was ready for the game, I stay in good shape with physical
exercise, training and proper dietary supplementation with Mannatech
products like BounceBack™ capsules, CardioBALANCE® heart care
formula, Optimal Support Packets, SPORT™ capsules and ImmunoSTART®
chewables that help me achieve and maintain optimal wellness.”

Currently an ESPN analyst, Lieberman is the youngest basketball player
in Olympic history to win a medal, a three-time college all-American and
inductee in the Basketball Hall of Fame. She is also a member of the
Team Mannatech program, a group of 195 athletes worldwide who utilize
cutting-edge training techniques and proper nutrition while serving as
educators preserving the integrity of sports competition and the health
of all athletes.

“We are proud to have Nancy as part of our team and cheered her on as we
watched her play and win last Friday,” said former Dallas Cowboys wide
receiver Butch
Johnson, Mannatech’s senior director of community affairs and sports
marketing. “Her accomplishments on and off the court and her dedication
to health and nutrition make her the ideal role model for today’s
wellness generation. We couldn’t be happier for her and look forward to
her continued success.”

The Team
Mannatech program aggressively supports the World Anti-Doping agency
through its dedication to preserving the integrity of sports competition
and health of all athletes. Mannatech products are formulated without
any of the 4,000 substances banned by the International Olympic
Committee’s 2009 world anti-doping list.

About Mannatech

Mannatech, Incorporated, is a global wellness solutions provider of
innovative, high-quality, proprietary dietary supplements, weight
management products and skin care solutions sold through independent
Associates and Members located in the United States and the
international markets of Canada, Australia, the United Kingdom, Japan,
New Zealand, the Republic of Korea, Taiwan, Denmark, Germany, South
Africa, and Singapore. For more information please visit www.mannatech.com
or www.allaboutmannatech.com.

Please Note: This release contains “forward-looking statements”
within the meaning of Section 27A of the Securities Act of 1933, as
amended, Section 21E of the Securities Exchange Act of 1934, as amended,
and the Private Securities Litigation Reform Act of 1995. These
forward-looking statements generally can be identified by use of phrases
or terminology such as “intend” or other similar words or the negative
of such terminology. Similarly, descriptions of Mannatech’s objectives,
strategies, plans, goals or targets contained herein are also considered
forward-looking statements. Mannatech believes this release should be
read in conjunction with all of its filings with the United States
Securities and Exchange Commission and cautions its readers that these
forward-looking statements are subject to certain events, risks,
uncertainties, and other factors. Some of these factors include, among
others, Mannatech’s inability to attract and retain associates and
members, increases in competition, litigation, regulatory changes, and
its planned growth into new international markets. Although Mannatech
believes that the expectations, statements, and assumptions reflected in
these forward-looking statements are reasonable, it cautions readers to
always consider all of the risk factors and any other cautionary
statements carefully in evaluating each forward-looking statement in
this release, as well as those set forth in its latest Annual Report on
Form 10-K and Quarterly Report on Form 10-Q, and other filings filed
with the United States Securities and Exchange Commission, including its
current reports on Form 8-K. All of the forward-looking statements
contained herein speak only as of the date of this release.